Rolling attachment for bending machines



A. T. YATES ROLLING ATTACHMENT FOR BENDING MACHINES June 12, 1928.

Original Filed Sept 28, 1

nun-un-m-m Patented June 12,1928,

UNITED STATES? PATENTTIOFFICE.

ARTEUR YATES, 0F BUFFALO, NEwYoaK nssrenon To BUFFALO FonGF. COMPANY,

OFBUFFALO, NEW YORK. a t 1 notnrne ATTAGHMENT Fort News MACHINES.

Original application filed September 2a, 1926, serial No. 138,139, Divided and this 1 1 28, 1927. Serial No, 187,171.

This invention relates to, attachments for use in connection with bending machines of the kind including threeor more rolls arranged so as to act on work to bend the same. a This application is a division of my application No. 138,139, filed September 28, 1926. 1 t j a In the ordinary use ofga bending machine of the kind to which this inventionrelates, the three rollsof the bendingmachine apply pressure in alternately opposite directions at three different points lengthwise of the work, and the work is passed through the machine while the rolls rotate, so that asubstanti'ally uniform bending of the 'work along its length results. For certain kinds of work,however, it is sometimes desirable to bend the work by elongation of one edge thereof, which can be done by rolling the portion of the work adjacent to that edge, so as to produce a slight decrease in the thickness of thework which is being rolled and a corresponding elongation thereof.

The objects of *this invention are to provide an attachment for abending machine by means of which a piece of workmay be rolled under pressure in such a manner as to produce an elongation of the work; also to provide an attachment of th s klnd wh1ch can be readily applied to or removed from a bending machine of a heretofore common construction; also to provide an attachment of this kind which is so constructed that only a small part of the pressure to which the attachmentis subjected during the roll ing of the work is transmitted to the bearings of the rolls of the attachment; also to improve thetconstruction of attachments of this kind in other respects hereinafter spec ified. 1 a j In the accompanying drawings, 7

F1 1 is a front elevation ofabending machine having myimproved attachment in place thereon. a I

Fig. 2 is'a fragmentary, sectional elevation of the bending-machine along the line 2-2, Fig. 1, showing my attachment on an enlarged scale; j i i Fig; 3-is a fragmentary, front elevatlon thereof. i

Fig. 4 is a fragmentary, top plan view of a bending machine on the same, scale as Fig, 1, showing the same bending an ianglesber flanges thereof.

application filed April by elongating the edge portion of one of the The bending machine to which my attachment may be applied may be of any suitable'or desired construction, that shown 7 in the drawings including a frame or housmg 15 on which theshaft of three rolls 16,

17 and 18 are'journalled, the rolls extend ing outwardly beyond the housing 15 and being arranged in triangular relation to each other. The work to be 'bentis passed between the rollstso that two rolls bearfon one face or side of thework and the third roll engagesth'e other faceor side of the work between the points at which the ,work is engaged by the other t-worolls. At least one of the rolls may be adjustable relatively to the other roll or rolls in any suitable or desired manner and in the construction shown this adjustment is obtained by moving the; upper roll 16 toward and fromthe two lower rolls 17 and 18 which rotate about relatively fixed axes, a hand wheel'19 and suitable adjusting mechanism (not shown) beingv preferably employed foreifecting the adjustment. The rolls of the bending machine are each generally made in two parts separated by annular slots or spaces 20 between the two parts of each roll into which a flange of a vbar or beam which is being bent may extend. These rolls are, of course,

driven by any suitable source of power so that allof the rolls rotate at the same peripheral speed. v i 1 In the particular embodiment of my invention shown in the drawings, my rolling attachment consists of three relatively small rolls 2 1, 22 and 23, the last two of which are pivoted in a suitable hearing or guide housing 24, provided with a downwardly extending guide portion 25 which extends between the two rolls 17 and 18 of the bending machine. Inthe particular construction in the drawings, includes front and rear frame portions 29 and 3O connected near their lower portions by a connecting mem beror art 31 which may be formed integral with the front and rear frame pcrtionsi illustrated the two lowerrrolls 22 and 23 are 1 f r 7, t tol cooperate with the "rolls 17 1 anti 1e 1 The tm rrmtm r ferent rests on the two lower rolls 22 and'23 and-y -;d0wnwa11tlly extending uit-le portion 2510f the iipfiertr'ollainstyLhe heldiagainstislisplacer ment in the directionof its length; bymTBHDS of upwardly extending projections 82 at the upper endsof qns 2.3 mi

obviate that the attthmenemayibe; piecedbetween the three rolls 16, 17 andTSofa n ng ach ne by isi lnply ofthese roll nto the space etween'thethree oi the bending-machine. The foppb l e sitli gsor tapes Stand/ oftlie front e musing- Tet med eon-nae i 7 t hold the 'nttechinent ifn 'corie'ct' relation to the bending '1 machine end for t1j is 11rp s;e

are, preferabl sheped'fto' golfep ied substentially to the curvature (at the be iph eries not" the. rolls 171mm 1s. omisfequn ti it the rolls "of: the ,ljending rnaohine gite' d iven imhe' direetion a's maimed by the v responding rotation willhe, imparted 0 upper roller of the arrowein Fig. l for pttssing the x'vo f'k troiii the right to the leftiii Fige; f1 aindfi i (58;-

e 'lowerrolls 22 and 23 J01; my "attachment" a indicated by the mirowsiin "Fig, 13, which will prqd'uee a refinement etpper r61 21 so that the surtece nitrate ztdjhcetit to'flth'e b n i giflzifi l 7 1 moveinf the sajne directionnethe agljeeent surface of this roll ti the bending mattin upper toilet, the bend in: machine relatively to the 'li'o'llsof the ro ing nttztclnnent,.themlistanee betweenthe lower. surta colof the 011.16 and the upper surfa ce of the rollfQl can be adjusted "a cc u ratefly as cles'ireclnand if: t iiedietanc'e i s etlv justed tobe slightly losev than the th'i ckness of tl1 e,part touberolletl a; railing o er theioutenportion b: of

i'l endt 18, in o 7 -pre'senre is exerted on-tli e .behrin'gsloft mp r0115, 22' and. 23 in the housing the preselongation of the work will i 'e'siil-t. Fig; 2 3 fund 4 show, wa' of illn'strhtioiij tow my 'attaehlnent may be employed for, befittng he n e r e efi' i i-A'end B,

the flange Bpbei'rji subjected to ,pres's'ure between the tolls. 16 w en Thisfeauses; n elongation 0f the outer portion b" ofthe'aange B, resulting in a; bending :of i the angle 1 bm in the direction clearly shown in 7, igs; 2 :iticl t ftlie'fibrk in Fig. 4 being. aesiijned tolhe from theyrightto theleftlw v i 1 ,lhe trolling device or atta ch'mentshewn is so constrncted that e the 1. pressure exerted oh the roll 2;1.resu1ting fi 'qinthe pass'ing ot 1work betwen-fthe tolls ,lel'and 21 1e treest inittetl. fro'riijthe jroll gl to therein 22 and 23: and :trom thegrolls 22rlenil 23th the rolls uch a nian'nefthtittryilittle sures being transiiiitte'cl' mainly through the rolls themselves. The bearings-of these rolls the frhht tinti- "were Mmetoe 30. Conseqpentlyit will be H js'6 thetjiiii 'ci1ring of the att'ziolifnentrtd' the "bendihg rniichine is necessary,but merely a 7 inserting the attachment in a direction ami emathetxee said third 221;afigl23, tlnarettne, eerre mainly to hold tlierollsinhorrect'i'elation to with other and to-the bending rolls 16, 17 and 18. The

the housing of the rolling attachment, hi.

relationto the rolls of the bending machine,

or. positioning of the rolling ntpl cin 7 en {the ,rblls" of the bending the .iae ni g attachment ti'lt;-the 1 'ourvetl g; surfaces; 3. .1, a e

'35. of the guide portion 25: he or another or the roll 17 will engag 01'' 18 "enfltlifi's limit the tilting movementor the rolling device or attachment. If ae- 1 sire-(l; e} heft? other 'pieee or w rk tnmy *be phsjod b'etween' the rolls 16 anrl21 h Illlll'h her ptftiihes fnht-il the ,deiredmirvntnre and; eldn attion otth'e'dge which is being rolled, is} o 'taline'd; )thti rolls? being gmdu'ellyi htgiuglit' ne ating-ether "so roliinig otit or 'el'o'ngttion is; effected. When it its de'sifedi to use the bending machine in itlusifiil niiiinerforbending a bar oiother workh the, 'Iblliii" tttechmentmn be quicklyqr mptee (fro its posisienbetweenthe 611 17 anq f The 'be" ding of tiihergrod or othewpieee of" work by mernsof pressure rolling; has the importantetlvhntage'jthat 'work may be bent eglgewise without tiny tendency on the lioinfgf'rolleiil The use of the iiig attathmentelse hes the advantage that the workl chn be uniformly cnrvetl irom end" to end thereof, while with bending-Inn:-

th 'bending r'nevohine nnd receiving movement therefromand the thirrlnfseid smellor rolls being dri 'en hy" engagement with Skid three two Smaller roll-31 and extending mea prbiti'r'nity to the thirdwrbll be the bend- ,i machine sothat work pessedi betweon eaiwthirdroH of the bendihg mnchmemnd 3:" hie-ironing -etteehment tori like ine mnheetien withhending' machines having three rolls arranged in triangular relation to each time there is tinyf'tentleney of between the three rolls of L j A I for use metcom nectio'nj with; tending machines having small roll will be rolledhnder xx A 7. t, 105 llll18$ 'siichj, a s heretoforebnsefl, at certain r other, said attachment including three smaller rolls also arranged in triangular relation to each other and adapted to be positioned between the three rolls of the bending machine so .that work passed between one of the rolls of the bending machine and the adjacent small roll of said attachment will be rolled under pressure.

3. A rolling attachment for use in connection with bending machines having three rolls arranged in triangular relation to each other, said attachment including three smaller rolls also arranged in triangular re lation to each other and adapted to be positioned between the three rolls of the bend ing machine so that work passed between one of the rolls of the bending machine and the adjacent small roll of said attachment will be rolled under pressure, the pressure exerted by the work on the small roll engaging the i work being transmitted from said small roll to the other two small rolls and then to two rolls of the bending machine.

4. A rolling attachment for use in conncc tion with bending machines having three rolls arranged in triangular relation to each other, said attachmeint including three smaller rolls also arranged in triangular relation to each other and adapted to be positioned between the three rolls of the bending machine so that work passed between one of the rolls of the bending machine and the adjacent small roll of said attachment will be rolled under pressure, anda housing in which the small rolls are held in operative relation to each other and which has a part adapted to engage with two of the rolls of the bending machine to hold said attachment in proper relation to the bending machine.

5. A rolling attachment for use in connection with bending machines having three rolls, two of which engage one face of the part to be rolled and the other of which ongages another face, said attachment consisting of three smaller rolls adapted to be positioned between the three rolls of the bending machine and in engagement with the first mentioned two rolls of the bending machine, such small rolls being freely rotatable by contact with said two rolls of the bending machine, and one of the three small rolls resting upon the other two small rolls and receiving its movement therefrom and being positioned adjacent to said other roll of the bending machine to roll work passed between said small roll and said other roll of the bending machine.

6. The combination of a bending machine having three rolls arrangedso that two of the three rolls engage one face of the work to be bent and the third roll engages the opposite face thereof at a point intermediate of the engagement of the work by said other two rolls, and a rolling attachment consisting of three small rolls, two of which engage said two rolls of the bending machine and the third of which is supported from said two small rolls and is positioned adjacent to said third roll of the bending machine, so that Work passed between said bending machine willbe rolled under pressure. i j g t 7. An attachment to'be inserted between the three 'rolls of a bending machine consisting of three small rolls, two of which are adapted to contact with two rolls of the third small roll and said third roll of the i bending machine, the third small roll being I mounted to roll on the faces of the other two small rolls and arranged in proximity to the third roll of the bending machine, and a housing on which said other two small rolls of said attachment are journalled, said housing fitting between two of the rolls of the bending machine for holding said three small rolls in correct relation to the rolls of said bending machine. 8. A rolling attachment for a bending machine having three bending rolls, said attachment including a pair of small rolls ar- I ranged to contact with two of the rolls of i the bending machine, a guide frame on which said two small rolls are journalled, said guide frame having a portion extending between two of the rolls of the bending machine to engage with said rolls to position said small rolls on said bending rolls,

and a third small roll mounted on said two small rolls and driven therefrom and extending into close proximity to the third roll of the bending machine so that work may be passed between said third roll of the bend-- ARTHUR T. YATES. 

